SecurityGroupCRUD is not updated when a security rule is created/delted

When a security rules is created after creating a security group, the security rule list in security group object is not updated in the data store

Steps to reproduce.
1.Create a security group
neutron security-group-create SG1 --description "SG1"
2.Add a rule to the security group
neutron security-group-rule-create --direction ingress --protocol udp --port-range-min 3333 --port-range-max 3333 --remote-ip-prefix 0.0.0.0/24 SG1

If the Data store is checked the newly added rule is missing in the Security Group Model.

Neutron DB
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Security Group Table
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Security Rule Table
----------------------------------------------------------------------------------------------------+

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In Data Store
---------------

Security Group Model

{
"security-groups": {
"security-group": [

{ "uuid": "44f759e7-79ae-46d6-ad59-a3c1446c82f1", "security-rules": [ "2bf8a6cc-b40a-48d2-95f4-bd4a0953bb73", "e491346d-a7dd-4c2a-8938-64163a00029e" ], "tenant-id": "27da8dfc-d61b-46ac-a5be-4533a4b7782c", "name": "SG1", "description": "SG1" }

]
}
}

Security Rule Model
--------------------
{
"security-rules": {
"security-rule": [

{ "id": "2bf8a6cc-b40a-48d2-95f4-bd4a0953bb73", "security-group-id": "44f759e7-79ae-46d6-ad59-a3c1446c82f1", "tenant-id": "27da8dfc-d61b-46ac-a5be-4533a4b7782c", "ethertype": "neutron-constants:ethertype-v6", "direction": "neutron-constants:direction-egress" }

,

{ "id": "b2e168eb-c35a-419e-baf0-40eeb89e6b90", "security-group-id": "44f759e7-79ae-46d6-ad59-a3c1446c82f1", "remote-ip-prefix": "0.0.0.0/24", "ethertype": "neutron-constants:ethertype-v4", "port-range-max": 3333, "tenant-id": "27da8dfc-d61b-46ac-a5be-4533a4b7782c", "direction": "neutron-constants:direction-ingress", "port-range-min": 3333, "protocol": "neutron-constants:protocol-udp" }

,

{ "id": "e491346d-a7dd-4c2a-8938-64163a00029e", "security-group-id": "44f759e7-79ae-46d6-ad59-a3c1446c82f1", "tenant-id": "27da8dfc-d61b-46ac-a5be-4533a4b7782c", "ethertype": "neutron-constants:ethertype-v4", "direction": "neutron-constants:direction-egress" }

]
}
}